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A6727 데이터시트(PDF) 13 Page - STMicroelectronics

부품명 A6727
상세설명  Adjustable output voltage
PDF  29 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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A6727 데이터시트(HTML) 13 Page - STMicroelectronics

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A6727
Soft-start and disable
6.2
Enable / disable
The device can be disabled externally by pushing COMP/DIS pin under 0.5 V (typ.). In
disable condition HS and LS MOSFETs are turned off, and a 20 mA current sources from
COMP/DIS pin. Setting the pin, this current pulls it over the threshold and the device
enables again performing a new SS.
To disable the device, the external pull-down needs to overcome 10 mA of COMP output
current for about 15 ms. Once disabled, COMP output current drops below 20 mA.
Figure 6. Startup sequence; VCC = 5 V
Figure 7. Overcurrent hiccup
AM16770v1
AM16771v1



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